Air blower



FIG. 1 is a right view showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines shown unclaimed portions of the article form no part of the claimed design. 

CLAIM The ornamental design for an air blower, as shown and described. 